>> jack hanna's "wild countdown" is sponsored by nationwide insurance. >> hi, everybody, i'm jack hanna coming to you from my base camp here at the columbus zoo. and welcome to "wild countdown". >> we've got one of the strangest animals you've ever come across. >> wow! look at that! >> today, i'm showcasing seven creatures so bizarre, they must be seen to be believed. sue, if i get a heart attack, come and save me. guess which one was considered a myth, even after it was discovered! >> right there. >> where? oh, yeah. >> oh, he's coming! >> and later, a truly tasteless blooper all the way from tasmania.